Skip several gcc.dg/builtin-dynamic-object-size tests on hppa*-*-hpux*

hppa*-*-hpux* doesn't have strdup or strndup.

2024-01-14  John David Anglin  <danglin@gcc.gnu.org>

gcc/testsuite/ChangeLog:

	* gcc.dg/builtin-dynamic-object-size-0.c: Skip on hppa*-*-hpux*.
	* gcc.dg/builtin-dynamic-object-size-1.c: Likewise.
	* gcc.dg/builtin-dynamic-object-size-2.c: Likewise.
	* gcc.dg/builtin-dynamic-object-size-3.c: Likewise.
	* gcc.dg/builtin-dynamic-object-size-4.c: Likewise.